CVE-2026-4239
Lagom WHMCS Template Datatables prototype pollution
CVSS Score
3.5
EPSS Score
0.0%
EPSS Percentile
0th
A vulnerability was found in Lagom WHMCS Template up to 2.3.7. Impacted is an unknown function of the component Datatables. The manipulation results in improperly controlled modification of object prototype attributes. It is possible to launch the attack remotely. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.
| CWE | CWE-1321 CWE-94 |
| Vendor | lagom |
| Product | whmcs template |
| Published | Mar 16, 2026 |
| Last Updated | Mar 16, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
Lagom / WHMCS Template
2.3.0 2.3.1 2.3.2 2.3.3 2.3.4 2.3.5 2.3.6 2.3.7
References
vuldb.com: https://vuldb.com/?id.351181 vuldb.com: https://vuldb.com/?ctiid.351181 vuldb.com: https://vuldb.com/?submit.771350 github.com: https://github.com/devsamuelsantiago/lagom-prototype-pollution-poc/ github.com: https://github.com/devsamuelsantiago/lagom-prototype-pollution-poc/blob/main/lagom-prototype-pollution-poc.js
Credits
🔍 s4nnty (VulDB User) VulDB